Satellite Uplink Site Switching with Controlled Signal Overlap
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Satellite communication systems face errors when switching from a primary site to a diverse site, disrupting the continuous broadcast of television signals to receiving devices.
Innovation Solution
A method and system that involve uplinking signals using a primary site, determining a switchover event, calculating switch times for both the primary and diverse sites, discontinuing the primary site's uplink, and initiating the diverse site's uplink to create a controlled gap, which is then corrected by the receiving device to ensure a continuous signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If switching is performed immediately when a switchover event is detected, then system reliability is improved by quickly transitioning to the diverse site, but errors occur at the receiving device due to signal discontinuity
Solution Approach 1:
The system performs preliminary actions by calculating and scheduling the diverse site uplink to start before the primary site uplink ends. This creates an overlap period where both sites are transmitting, ensuring the receiving device maintains continuous signal reception during the transition, thereby preventing errors while achieving reliable switchover.
2Stability of the object's composition
If the diverse site uplink starts before the primary site uplink ends, then signal continuity is maintained at the receiving device, but transmission time is extended due to the overlap period
Solution Approach 1:
The system uses self-service by having the receiving device perform error correction on the overlapping transmission period. The receiver automatically identifies and corrects errors in the received signals during the overlap, eliminating the need for manual intervention or extended transmission time while maintaining signal continuity.
3Object-affected harmful factors
If a gap is created between primary and diverse site signals, then error correction can be performed at the receiving device, but broadcast continuity is interrupted
Solution Approach 1:
The system applies preliminary action by scheduling the diverse site uplink to begin before the primary site uplink concludes, creating an intentional overlap rather than a gap. This preliminary timing arrangement allows the receiving device to perform error correction on the overlapping signals while maintaining apparent broadcast continuity, as the receiver can seamlessly transition between the two signals.
Data Source
AI summary
A method and apparatus for broadcasting in a satellite communication system includes uplinking first uplink signals using a primary site, determining a switchover event and determining a primary site switch time. The primary site switch timer is determined along with a diverse site switch timer that is after the primary switch time. The uplink signal is discontinued from the primary site and the uplinking second uplink signals from the diverse site.